Commodore Pictures

A colonial police detective in an Eastern seaport seeks a stolen gem, and infiltrates the underworld by posing as a look-alike wharfside bar owner.

Cheyenne rides into Durango and runs into his old enemy Kelton. Kelton's game is to bring his safe to a town without a bank and let the townspeople put their valuables in it. Then he grabs the loot and flees. But Cheyenne is on to his scheme and finding the safe empty, gets the Sheriff to join in the chase.

On an African safari with his friend Grant, Clyde Beatty plans to buy some black-maned Numbian lions from Jo Carter but her animals are wiped out by a fire. Despite interference by rival dealer Gorman, who hopes to ruin Jo, Beatty saves her business by helping her to capture an adult gorilla. (2nd story) When Grant is bitten by a tsetse fly and falls ill, Beatty heads for the nearest hospital through the territory of the dangerous Matabeles tribe. They are captured and condemned to death by Grubbs, a white man living with the tribe and stealing their gold. Using the Matabele Boy King as a shield, Beatty and Grant make an escape and Grubbs is forced to accompany them, leaving his loot behind.